From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 0579BA0487 for ; Sun, 30 Jun 2019 18:22:22 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 27A6B1B9A5; Sun, 30 Jun 2019 18:21:56 +0200 (CEST) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by dpdk.org (Postfix) with ESMTP id CC1511B996 for ; Sun, 30 Jun 2019 18:21:50 +0200 (CEST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 647E6CFC; Sun, 30 Jun 2019 09:21:50 -0700 (PDT) Received: from net-arm-thunderx2.shanghai.arm.com (net-arm-thunderx2.shanghai.arm.com [10.169.40.40]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 80AE43F718; Sun, 30 Jun 2019 09:21:48 -0700 (PDT) From: Gavin Hu To: dev@dpdk.org Cc: thomas@monjalon.net, jerinj@marvell.com, hemant.agrawal@nxp.com, bruce.richardson@intel.com, chaozhu@linux.vnet.ibm.com, Honnappa.Nagarahalli@arm.com, nd@arm.com, gavin.hu@arm.com Date: Mon, 1 Jul 2019 00:21:16 +0800 Message-Id: <1561911676-37718-6-git-send-email-gavin.hu@arm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561911676-37718-1-git-send-email-gavin.hu@arm.com> References: <1561911676-37718-1-git-send-email-gavin.hu@arm.com> Subject: [dpdk-dev] [RFC 5/5] config: add WFE config entry for aarch64 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Add the RTE_USE_WFE configuration entry for aarch64, disabled by default. It can be enabled selectively based on the performance benchmarking. Signed-off-by: Gavin Hu Reviewed-by: Ruifeng Wang Reviewed-by: Steve Capper Reviewed-by: Honnappa Nagarahalli --- config/arm/meson.build | 1 + config/common_armv8a_linux | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/config/arm/meson.build b/config/arm/meson.build index 6fa06a1..939d60e 100644 --- a/config/arm/meson.build +++ b/config/arm/meson.build @@ -116,6 +116,7 @@ impl_dpaa = ['NXP DPAA', flags_dpaa, machine_args_generic] impl_dpaa2 = ['NXP DPAA2', flags_dpaa2, machine_args_generic] dpdk_conf.set('RTE_FORCE_INTRINSICS', 1) +dpdk_conf.set('RTE_USE_WFE', 0) if not dpdk_conf.get('RTE_ARCH_64') dpdk_conf.set('RTE_CACHE_LINE_SIZE', 64) diff --git a/config/common_armv8a_linux b/config/common_armv8a_linux index 72091de..ae87a87 100644 --- a/config/common_armv8a_linux +++ b/config/common_armv8a_linux @@ -12,6 +12,12 @@ CONFIG_RTE_ARCH_64=y CONFIG_RTE_FORCE_INTRINSICS=y +# Use WFE instructions to implement the rte_wait_for_equal_xxx APIs, +# calling these APIs put the cores enter low power state while waiting +# for the memory address to be become equal to the expected value. +# This is supported only by aarch64. +CONFIG_RTE_USE_WFE=n + # Maximum available cache line size in arm64 implementations. # Setting to maximum available cache line size in generic config # to address minimum DMA alignment across all arm64 implementations. -- 2.7.4